When a time series has both trend and seasonality, it is necessary to model seasonality along with trend.
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Q12: When the forecasting method of seasonal dummy
Q13: _ patterns are caused by the presence
Q14: The optimal value of the speed of
Q15: Quantitative forecasting procedures are based on the
Q16: The exponential trend model is attractive when
Q18: When the decomposition model, yt = Tt
Q19: A linear trend can be estimated using
Q20: The mean of the absolute residuals defines
Q21: The _ of the adjusted seasonal indices
Q22: To extract the trend from a time
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